This is the cam in my engine. The receipt I have says WG1139K, and when checked through Crane's website (which is now shut down) a while back, is shown as grind number 284H, with these specs:
Durartion Advertised: 284°/284°
Duration at .050": 218°/218°
Lift at .050": .450"/.450"
If I remember correctly the specs at Crane's website claimed it made power from 1000 - 5500 RPM. It looks like it may be a copy of the comp 268 cam.
I had a Crane tech on the phone a good while back and he told me to match parts that make power through 4800 RPM.
It seems like the few times that I have manually 1-2 shifted my TH350, the engine stops pulling hard at around 5500 to 5800 RPM.
I am close to swapping my heads (GM #624 smoggers) out for a set of worked over GM #601 heads. There is a good chance that these heads will flow enough to make power past 6000 RPM.
What I am wondering, and want to know if anyone has experience with is this:
Does this cam just stop making power around 5500? Has anyone used one and have some wisdom to give up? I've searched the web for a dyno sheet to see for myself but can't find one. I don't really want to do this swap for more power only to be held back by the cam.
Trust me, if I had an extra two or three hundred bucks, I'd already have a voodoo 60102 or comp XE268H on the way to my house.
I have a line on a used 268H for a very good price, with only a little dyno time on it, which may not be the best choice, but is probably way better than what I am running. It would come with the lifters that were used. I am going to flat out ask...how risky is it to try and install a used cam/lifters?
I guess I wound up asking more questions than I intended here, and wound up with another book instead of a straightforward post. If you guys that have been doing this a long time would give me some insight, I'd appreciate it. Thanks.